I am not very familiar with hibernate framework and I came across a "problem". So, I created a Hibernate (JPA) project in IntelliJ, succesfully connected it to a Postgress database and when I want to run the project I get this error.
This is Main.java code
import entity.Faculty;
import entity.Student;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
public class Main {
public static void main(String[] args) {
Faculty ciocky = new Faculty();
ciocky.setId(1);
ciocky.setName("USV");
Student s1 = new Student();
s1.setAge(22);
s1.setId(33);
s1.setFaculty(ciocky);
s1.setLastName("Ioanid");
s1.setFirstName("Berariu");
Configuration configuration = new Configuration().configure().addAnnotatedClass(Student.class);
SessionFactory sessionFactory = configuration.buildSessionFactory();
Session session = sessionFactory.openSession();
Transaction transaction = session.beginTransaction();
session.save(s1);
transaction.commit();
}
}
This is Student class:
package entity;
import javax.persistence.*;
@Entity
@NamedQuery(name = "Student.byFacultyId", query = "select s from Student s where s.faculty.id =?1")
public class Student {
private int id;
private String firstName;
private String lastName;
private int age;
private Faculty faculty;
@Id
@Column(name = "id")
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Basic
@Column(name = "first_name")
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
@Basic
@Column(name = "last_name")
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
@Basic
@Column(name = "age")
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Student student = (Student) o;
if (id != student.id) return false;
if (age != student.age) return false;
if (firstName != null ? !firstName.equals(student.firstName) : student.firstName != null) return false;
if (lastName != null ? !lastName.equals(student.lastName) : student.lastName != null) return false;
return true;
}
@Override
public int hashCode() {
int result = id;
result = 31 * result + (firstName != null ? firstName.hashCode() : 0);
result = 31 * result + (lastName != null ? lastName.hashCode() : 0);
result = 31 * result + age;
return result;
}
@ManyToOne
@JoinColumn(name = "faculty_id", referencedColumnName = "id", nullable = false)
public Faculty getFaculty() {
return faculty;
}
public void setFaculty(Faculty facultyByFacultyId) {
this.faculty = facultyByFacultyId;
}
@Override
public String toString() {
return "Student{" +
"id=" + id +
", firstName='" + firstName + '\'' +
", lastName='" + lastName + '\'' +
", age=" + age +
", " + faculty +
'}';
}
}
This is Faculty class
package entity;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity
public class Faculty {
private int id;
private String name;
@Id
@Column(name = "id")
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Basic
@Column(name = "name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Faculty faculty = (Faculty) o;
if (id != faculty.id) return false;
if (name != null ? !name.equals(faculty.name) : faculty.name != null) return false;
return true;
}
@Override
public int hashCode() {
int result = id;
result = 31 * result + (name != null ? name.hashCode() : 0);
return result;
}
@Override
public String toString() {
return "Faculty{" +
"id=" + id +
", name='" + name + '\'' +
'}';
}
}
This is pom.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>ro.cristi</groupId>
<artifactId>hibernateTest</artifactId>
<version>1.0-SNAPSHOT</version>
<name>hibernateTest</name>
<properties>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.source>1.8</maven.compiler.source>
<junit.version>5.7.1</junit.version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.2.20</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.29.Final</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
</plugins>
</build>
</project>
This is persistence.xml file:
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd"
version="2.2">
<persistence-unit name="default">
<class>entity.Faculty</class>
<class>entity.Student</class>
<properties>
<property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/hibernate_test"/>
<property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
<property name="hibernate.connection.user" value="postgres"/>
<property name="hibernate.connection.password" value="******"/>
<property name="hibernate.show_sql" value="true"/>
</properties>
</persistence-unit>
</persistence>
And this is the error:
Apr 24, 2021 11:05:15 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate ORM core version 5.4.29.Final
Exception in thread "main" org.hibernate.internal.util.config.ConfigurationException: Could not locate cfg.xml resource [hibernate.cfg.xml]
at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:53)
at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:254)
at org.hibernate.cfg.Configuration.configure(Configuration.java:258)
at org.hibernate.cfg.Configuration.configure(Configuration.java:244)
at Main.main(Main.java:68)
I know that it might sound as a dumb quesion but I am new, so please if you can help I am very gratefully.
Thank you in advance!
